The International Archives of the Photogrammetry, Remote Sensing and Spatial Information Sciences. Vol. XXXVII. Part B4. Beijing 2008 
492 
TM. All the information for land-use update could get in the lab. 
As a result, it can cut down the outside workload, reduce the 
cost and shorten the cycle to get accurate and real-time land-use 
updating map. 
©High quality data. The catche of the plots in the land-use 
update adopt the DGPS method which can obtain the plot 
boundary data in precision within 5 centimeters. It is much 
higher than the precision in the 1/10000 land-use cartography. 
©High administrator efficiency. There are two asides: one is 
that the survey data from the GPS just needs to be transferred 
from the 84 coordinate system into the reference system in our 
country and then it could work out the update layer; the other is 
that all of the land-use base databases, image fusion map and 
the updated layers store and run under the digital environment, 
so it is convenient for querying, issuing, inspecting, decision 
making analysis and the infinite showing of the scale, etc. 
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ACKNOWLEDGEMENTS 
The Project are supported by National Natural Science Fund, 
China (No.40771161) and the technology of large scale land 
utilization map, which is supported the Department 
Territory,the People’s Republic of China